Improvement in lamp-burners



T M. BRINTNALL. 5 Lamp-Burner.

. No. 201,221. Patented March 12, 187.8.

M -INVEN'TOR ATTQRN EYS N. PETERs. PHOYO-LITHOGRAPHER, WASHKNGTDN D C,

UNITED STATES PATENT OFFICE.

THOMAS M. BRINTNALL, OF MEDINA, OHIO.

- IMPROVEMENT lN LAM P-BURNERS.

' Specification forming part of Letters Patent No. 201,221, dated March12, 1878; application filed February 16, 1878. v

To all whom-it may concern:

Be it known that I, THOMAS M. BRINTNALL, of Medina, in the county ofMedina, and in the State of Ohio, have invented certainnew and usefulImprovements in Lamp Burner and Beservoir; and do hereby declare thatthe following is a full, clear, and exact description thereof, referencebeing had to the accompanying drawings, and to the letters of referencemarked thereon, making a part of this specification.

My invention relates to lamps; and it consists in the application ofcompressed paper or paper-pulp, introduced between the burner andreservoir, as a non-conductor, to prevent the transmission of heat fromthe flame to the oil in the reservoir, and in the construction andcombination of parts, as will be hereinafter more fully set forth, andpointed out in the claims.

In order to enable others skilled in the art to which my inventionappertains to make and use the same, I will now proceed to describe itsconstruction and operation, referring to the annexed drawing, in whichFigure 1 is a central vertical section of a nut with non-conductor andshield, to be inter posed between the burner and the reservoir.

Fig. 2 is a plan view of the same. Fig. 3 is a central vertical section,showing a modification thereof. Fig. 4 is a central vertical section ofthe lamp-reservoir.

R represents the lamp-reservoir, made of glass, in any desired form, andprovided in the topwith the usual round opening a, which may have femalescrew-threads cast in it, or a metallic collar, b, fastened therein,said collar having the female screw-threads, as' shown. Around theopening a in the upper surface of the reservoir R is formed an annulardepression or recess, g, which is for the purpose of catching alldrippings while filling the lamp,

' and prevent the same from passing down the outside of the lamp andsoiling the table, table-cloth, 850. Any oil collected in saiddepression or recess 3 can easily be wiped up as soon as the lamp isfilled.

Between the reservoir R and the burner I interpose a nut, constructed inthe following manner: A is aferrule, provided at its lower end withexterior screw-threads to fit in the screw-threads b'of thelamp-reservoir. v .The.

upper portion of the ferrule A is constructed in the manner shown, wasto form interlor circumferential shoulders 00 andz.

ing a central slot for the passage of the lampwick, said plate beingentirely free to turn on said shoulder :10. On the shoulderz of theferrule, above the plate 0, rests an annular ring or collar, B, heldfirmly to the ferrule by having the edge of the ferrule surrounding andclamping the same, or turned into it, or in any other suitable manner.The ring or collar B is made of compressed paper or paper-pulp, toprevent the conduction of heat to the reservoir.

By experiments I have found that paper or paper-pulp is not only aperfect non-conductor, but is superior in the uses I design to any knownnon-conductor. Itwillnotcrack; it is light in weight and cheap; is notliable to expand or contract; can be formed into the shape required, andwill retain its shape, and has great strength.

On the top of the non-conductor B is secured a metallic collar, F,provided with interior screw-threads, and thiscollar isformed orprovided with a circular disk, D, extending around the same. The outeredge of this disk may be turned under, as shown in Fig. 1, orit may beextended under to form a connection with the non-conductor, as shown inFig. 3. In all cases, however, there must be no metallic connectionbetween the ferrule A and the collar for disk D; but the non-conductor Bmust come in between them, to prevent the transmission of the heat fromthe burner to the reservoir.

The burner is' screwed into the collar F, the wick passing down throughthe slotted plate 0, which, being loose, prevents the wick from becomingtwisted. This plate 0 also answers another very important purposeviz.,it cuts off the oil, so that the oil cannot come in contact with thenon-conductor,whichwould soon change the non-conductor to a conductor ofheat.

The shield or deflector D, as shown and described, forms part of thecollar F; but it may equally as well form a part of the ferrule A; or itmay, in any other suitable manner, be interposed between the burner andthe reservoir.

Upon the lower shoulder as rests a loose flat plate, O,hav-

The vobject of this shield or deflector. is topre-- vent the rays oflight from the 'fiame from striking the top of the reservoir, whichwould heat the oil therein and generate gas.

The shield or deflector D may be made of porcelain, marbleized iron, orother metal, or of any material suitable for the purpose.

I do not broadly claim a non-conductor in a lamp-burner to prevent theconduction of the heat to the lamp-reservoir. Nor do I broadly claim aplate as a deflector in lamps, as I am aware that such have been known.Nor do I claim an angular plate interposed between a non conductor andthe screw-collar of the lamp, said plate being connected to and movingwith the lower section of a divided wicktube. I am not aware, however,that the devices shown and described by me have ever before been known,or that any approximate devices have been known, which will perform thedesired functions as fully and economically as the one herein set forth.v

Having thus fully described my invention, what I claim as new, anddesire to secure by Letters Patent, is-

1. In a lamp, a non-conductor formed of compressed paper or paper-pulp,and interposedbetween the burner and reservoir, snbstantially as hereinset forth.

2. The ferrule A, having annular interior shoulders at and z, incombination with the non-- conductor B and the loose fiat and slottedplate 0 interposed between the non-conductor and shoulder as, andcapable of freely rotating on its seat, substantially as herein setforth.

3. The deflector D, formed as a part of the screw-collar, in combinationwith and connected to the non-conductor B,'and in combi-Y THOMAS M.BRINTNALL.

Witnesses FRANK GALT, J. J. MCCARTHY.

